<template>
    <div class="list" ref="wrapper">
        <div>
            <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="button-list">
                    <div class="button-wrapper">
                        <div class="button">{{this.currentCity}}</div>
                    </div>
                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="button-list">
                    <div class="button-wrapper"
                         v-for="item in hot"
                         :key="item.id"
                         @click="handleCityClick(item.name)"
                    >
                        <div class="button">{{item.name}}</div>
                    </div>
                </div>
            </div>
            <div class="area"
                 v-for="(item,key) in cities"
                 :key="key"
                 :ref="key"
            >
                <div class="title border-topbottom">{{key}}</div>
                <div class="item-list"
                     v-for="innerItem in item"
                     :key="innerItem.id"
                     @click="handleCityClick(innerItem.name)"
                >
                    <div class="item border-bottom">{{innerItem.name}}</div>
                </div>
            </div>
        </div>
    </div>
</template>

<script>
    import Bscroll from 'better-scroll'
    import {mapState, mapMutations} from 'vuex'

    export default {
        name: "CityList",
        props: {
            hot: Array,
            cities: Object,
            letter: String
        },
        computed: {
            ...mapState({
                currentCity: 'city'
            })
        },
        mounted() {
            this.scroll = new Bscroll(this.$refs.wrapper, {
                click: true
            })
        },
        updated() {
            this.scroll.refresh()
        },
        watch: {
            letter() {
                if (this.letter) {
                    const element = this.$refs[this.letter][0]
                    // console.log(element)
                    this.scroll.scrollToElement(element)
                }
            }
        },
        methods: {
            handleCityClick(city) {
                // this.$store.commit('changeCity', city);
                this.changeCity(city);
                this.$router.push("/");
            },
            ...mapMutations(['changeCity'])
        }
    }
</script>

<style lang="scss" scoped>

    @import "~@/styles/varibles.scss";

    .border-topbottom {
        &:before, &:after {
            border-color: #cccccc;
        }
    }

    .border-bottom {
        &:before {
            border-color: #cccccc;
        }
    }

    .list {
        position: absolute;
        top: 1.58rem;
        left: 0;
        right: 0;
        bottom: 0;
        overflow: hidden;

        .title {
            line-height: .54rem;
            background: #eeeeee;
            padding-left: .2rem;
            color: #666666;
            font-size: .26rem;
        }

        .button-list {
            padding: .1rem .6rem .1rem .1rem;
            overflow: hidden;

            .button-wrapper {
                width: 33.33%;
                float: left;

                .button {
                    margin: .1rem;
                    padding: .1rem 0;
                    text-align: center;
                    border: .02rem solid #cccccc;
                    border-radius: .6rem;
                }
            }
        }

        .item-list {
            .item {
                line-height: .76rem;
                color: #666666;
                padding-left: .2rem;
            }
        }
    }

</style>
